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Nickel 686 vs. Ductile Cast Iron

Nickel 686 belongs to the nickel alloys classification, while ductile cast iron belongs to the iron alloys. There are 29 material properties with values for both materials. Properties with values for just one material (3, in this case) are not shown.

For each property being compared, the top bar is nickel 686 and the bottom bar is ductile cast iron.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 220
170 to 180
Elongation at Break, % 51
2.1 to 20
Poisson's Ratio 0.29
0.28 to 0.31
Shear Modulus, GPa 77
64 to 70
Shear Strength, MPa 560
420 to 800
Tensile Strength: Ultimate (UTS), MPa 780
460 to 920
Tensile Strength: Yield (Proof), MPa 350
310 to 670

Thermal Properties

Latent Heat of Fusion, J/g 320
270
Maximum Temperature: Mechanical, °C 980
290
Melting Completion (Liquidus), °C 1380
1160
Melting Onset (Solidus), °C 1340
1120
Specific Heat Capacity, J/kg-K 420
490
Thermal Conductivity, W/m-K 9.8
31 to 36
Thermal Expansion, µm/m-K 12
11

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 1.4
7.4
Electrical Conductivity: Equal Weight (Specific), % IACS 1.4
8.8 to 9.4

Otherwise Unclassified Properties

Base Metal Price, % relative 70
1.9
Density, g/cm3 9.0
7.1 to 7.5
Embodied Carbon, kg CO2/kg material 12
1.5
Embodied Energy, MJ/kg 170
21
Embodied Water, L/kg 300
43

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 320
17 to 80
Resilience: Unit (Modulus of Resilience), kJ/m3 280
280 to 1330
Stiffness to Weight: Axial, points 14
12 to 14
Stiffness to Weight: Bending, points 22
24 to 26
Strength to Weight: Axial, points 24
17 to 35
Strength to Weight: Bending, points 21
18 to 29
Thermal Diffusivity, mm2/s 2.6
8.9 to 10
Thermal Shock Resistance, points 21
17 to 35

Alloy Composition

Carbon (C), % 0 to 0.010
3.0 to 3.5
Chromium (Cr), % 19 to 23
0
Iron (Fe), % 0 to 5.0
93.7 to 95.5
Manganese (Mn), % 0 to 0.75
0
Molybdenum (Mo), % 15 to 17
0
Nickel (Ni), % 49.5 to 63
0
Phosphorus (P), % 0 to 0.040
0 to 0.080
Silicon (Si), % 0 to 0.080
1.5 to 2.8
Sulfur (S), % 0 to 0.020
0
Titanium (Ti), % 0.020 to 0.25
0
Tungsten (W), % 3.0 to 4.4
0